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The urinary system
is
considered
as
drainpipes
of
human
body.
Most
of
metabolic
waste
products and abnormal
materials
are
excreted
through
urine.
Checking
the chemical
compositions
in
the
urine, and
investigating differenlly formed
materiais
under
the
microscope
are
now
simple
and
accurate
routine
tests
clinicatly.
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